package com.ljh.config;

import org.springframework.web.servlet.HandlerInterceptor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * @author ：刘剑鸿
 * @date ：Created in 2021/9/9 11:21
 * @description：配置登录session
 * @modified By：
 * @version: $
 */
public class LoginHandlerInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        //登录成功之后
        Object loginUser = request.getSession().getAttribute("loginUser");
        if(loginUser == null){//没有登录
            request.setAttribute("msg","没有权限请先登录");
            request.getRequestDispatcher("/login.html").forward(request,response);
            return false;
        }else {
            return true;
        }
    }
}
